Road Safety and Stopping Distances

The video explains the relationship between speed and stopping distance, highlighting that higher speeds result in longer stopping distances due to increased kinetic energy. It provides a detailed calculation of stopping distances at different speeds, emphasizing the importance of reducing speed to avoid obstacles. The video also discusses how wet roads can double stopping distances, underscoring the need for caution in adverse weather conditions.

What type of energy does a moving car store?

• Potential energy

• Chemical energy

• Thermal energy

• Kinetic energy

How does the kinetic energy of a car change as its speed increases?

• It fluctuates

• It increases

• It remains constant

• It decreases

What happens to the stopping distance as the speed of a car increases?

• It becomes unpredictable

• It decreases

• It remains the same

• It increases

How much distance is required to stop a car traveling at 90 km/h?

• 90 meters

• 70 meters

• 57 meters

• 80 meters

What is the stopping distance for a car traveling at 80 km/h?

• 80 meters

• 70 meters

• 90 meters

• 57 meters

How are stopping distances affected on wet roads?

• They are halved

• They remain the same

• They are multiplied by two

• They are reduced by a quarter